Entertaiment is a type of show that is presented for the amusement and enjoyment of others. This can be seen in many different styles like rite, party, non secular pageant or even satire. This kind of entertainment can often hit on a level that the mind was evolved to react deeply to, as well as stimulate the brain to realease seratonin and dopamine. This is why so many entertainers focus on themes such as murders, backstabbing and other social issues that the mind was shaped to react to in society.
From Middle English entretenement, from Old French entretener; see entertain.